$port = rand(10000,10100);
$socket = fsockopen($_GET['server'],$port,$errno,$errstr,3) or die("error : {$errstr}");
Warning: fsockopen(): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /var/www/html/challenge/web-16/index.php on line 23
Warning: fsockopen(): unable to connect to MY_PULBIC_IP:10036 (php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution) in /var/www/html/challenge/web-16/index.php on line 23
error : php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution